The iPhone 7 might support wireless charging...

This is, weirdly, a longshot when it comes to Apple. The company is famously picky when it comes to adopting new technologies.

As a case in point the iPhone 6 launched with NFC but the technology has, so far, only been limited to the delivery method for Apple Pay.

Wireless charging isn't what you might call an 'essential' feature, rather it's something that adds convenience. On top of that it could be space inside the phone's case that Apple is simply not willing to spare.